Just a quick and simple project. I wanted a way to hold test tubes, and while there’s a few designs online already, none quite fit what I wanted. Some didn’t have enough reinforcing on the sides (so they might collapse if something leans on them sideways), and others had staggered rows which I thought made it too hard to see the contents.

After a few rounds of cutting this is what I ended up with:

Files are here:

http://www.thingiverse.com/thing:714239